add version string

main.c

@@ -36,6 +36,8 @@
 #define REGISTER_SERVOB_KDC 26
 #define REGISTER_SERVOB_KDD 27
 
+const char version[] = "ServoMotor";
+
 // Motor Pins
 #define MOTOR_A_POT 2
 #define MOTOR_A_PIN_A PD5
@@ -390,6 +392,8 @@ ISR(TWI_vect) {
             default:
                 if (reg_pointer < REGISTER_COUNT) {
                     data_to_send = registers[reg_pointer];
+                } else {
+                    data_to_send = version[reg_pointer % sizeof(version)];
                 }
                 break;
         }
@@ -533,7 +537,7 @@ int main(void) {
         
         // Heartbeat LED - toggle every ~0.5 seconds
         heartbeat_counter++;
-        if (heartbeat_counter >= 10000) {
+        if (heartbeat_counter >= 500) {
             PORTA ^= (1 << PA7);
             heartbeat_counter = 0;
         }